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What Are the Methods for Determining Herbicide Damage in Rice
Currently, most people mix pesticides when using them in order to increase their effectiveness. However, if used improperly, this can easily cause herbicide damage. How to determine whether it is herbicide damage through investigation and analysis? The following methods are introduced: 1. From
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Control Methods for the Small Brown Planthopper at the Rice Heading Stage
The small brown planthopper (Laodelphax striatellus) not only transmits viruses that cause rice viral diseases such as rice stripe virus disease, but also congregates on the panicles to cause damage during the heading stage of late rice. To clarify the control efficacy of pymetrozine and other pesticides against the small brown planthopper at the heading stage of late rice and the application techniques, Cheng Qinhai and others from the Plant Protection Station of Haining City, Zhejiang Province, conducted field
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Detailed Explanation of Rice Super-High-Yield Intensive Cultivation Technology
I. Technical Characteristics Compared with traditional high-yield cultivation techniques, the rice super-high-yield intensive cultivation technology system has the following characteristics. 1. Early transplanting of young seedlings. The intensive cultivation technology allows transplanting of 2-3 leaf-age seedlings in winter fallow fields or winter paddy fields, and 3-5 leaf-age seedlings in double-cropping fields
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Field Management Techniques for Rice During the Jointing and Panicle Elongation Stage
Rice jointing begins around the peak tillering stage and internode elongation does not stop until several days after heading; in production, this period is called the jointing and panicle elongation stage. The field management goals during the jointing and panicle elongation stage are: on the basis of preserving tillers and increasing panicles, promote strong stems and large panicles, and prevent excessive vegetative growth
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Five preventive management measures for the late growth stage of rice
When rice enters the late reproductive stage, it is a critical time for yield formation, and the following five preventive measures must be carried out well. 1. Prevent fertilizer deficiency. For fields where no nitrogen fertilizer was applied at the mid stage and where fertilizer deficiency and premature aging appear at the late stage, 2-3 kg of urea per mu can be applied at the booting stage as a booting fertilizer. For those growing normally and robustly,
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Why should rice seeds be sun-dried before sowing?
Sun-drying rice seeds before sowing can effectively improve the germination rate and germination vigor of the seeds. The main reasons are: 1. Sun-drying seeds can promote after-ripening of the seeds and increase enzyme activity. After rice seeds are harvested, although they are sun-dried, winnowed and cleaned before being stored, because maturity and dryness vary, the air humidity and temperature during storage will also change. If the seeds absorb moisture, respiration becomes vigorous, and nutrients inside the seeds are consumed heavily, which often leads to weakened germination ability and reduced germination vigor. Sun-drying the seeds can enhance the permeability of the seed coat, so that they absorb water evenly during soaking and enzyme activity is increased.
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Three key stages to grasp in rice film seedling raising
Based on many years of practical experience, I believe that three key stages should be noted in the technique of raising rice seedlings under film: the closed stage, the hardening stage and the film-removal stage. The first stage: the closed stage, that is, from sowing to the one-leaf-one-heart stage. During this period the film must be tightly closed to create
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Detailed Guide to Licorice Planting Methods and Cultivation Experience
1. Site selection and land preparation. Usually choose sandy loam soil that is fertile, loose in texture, well-drained, and low in salinity and alkalinity. Usually when preparing the land, a tractor is used to plow the field, with deep plowing of about 20 cm. At the same time, apply 2000-2500 kg of barnyard manure per 667 sq m as base fertilizer, then level and harrow finely.
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Detailed Explanation of Licorice Propagation Methods and Cultivation Techniques
Licorice propagation has three methods: seed propagation, rhizome propagation and division propagation. 1. Site selection and land preparation: Sandy soil and loose red loam soil are suitable; apply 2500 kg of farmyard manure per 667 sq m, deep plow 40-50 cm in autumn, harrow fine and level, and make high ridges 40-50 cm wide with furrows 30-35 cm wide.
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Key Field Management Techniques for Licorice Cultivation
1. Licorice begins to emerge about 15 days after planting. After the seedlings are established, apply 15 kg of urea per mu along with irrigation to promote seedling growth. From late May to early June, open furrows and apply 30 kg of diammonium phosphate per mu, then irrigate. During this period, fertilize and irrigate scientifically to ensure vigorous seedling growth
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